Senior Software Engineer, Fullstack

CoderPad, Inc; United States; Remote; USD 140,000 - 180,000; Full time

Job summary

CoderPad, Inc is hiring a Senior Software Engineer to help build the future of technical interviewing and assessment. This fullstack role spans backend services, frontend surfaces, and AI-powered system design, with work on user-facing features, production infrastructure, and internal tooling.

You will contribute to AI-driven experiences, system orchestration, and cross-team collaboration while mentoring peers and improving system reliability.

Qualifications

• Senior-level experience shipping production software end-to-end in a fullstack capacity.
• Strong backend engineering skills in at least one modern language and ecosystem, plus practical frontend experience.
• Proven ability to pick up unfamiliar stacks quickly and deliver in mixed-technology environments.
• Hands-on experience with agentic development workflows and AI-generated code review.
• Experience building production systems that use AI and LLM API integrations.
• Significant contribution to code review and mentoring peers.

Responsibilities

• Build and ship fullstack product features across candidate and recruiter experiences, from API and data model design to frontend implementation.
• Improve real-time AI-powered experiences, including model orchestration and streaming UX.
• Integrate multiple LLM providers with attention to latency, cost, and observability.
• Develop tooling to help engineers and agents execute work safely and auditable.
• Partner with product, design, and platform teams to move ambiguous problems to production.
• Lead code reviews as a quality gate and coaching channel for engineers.
• Plan and deliver technical debt, architecture, and observability initiatives.
• Participate in on-call operations and improve runbooks and incident follow-up.

Skills

Senior fullstack experience

Backend development

Frontend component-based framework

Agentic AI workflows

Code review & mentoring

Observability & reliability

Cross-functional collaboration

Backlog planning & delivery

Testing & debugging

Clear written communication

Tools

Cursor

Claude Code

Codex

Job description

Role Summary

We are hiring a Senior Software Engineer to help build the future of technical interviewing and assessment across CoderPad.This is a fullstack role for someone who can move across backend services, frontend product surfaces, and AI-powered system design. You will work on user-facing features, production infrastructure, and internal engineering workflows where coding agents and AI-assisted development are part of normal day-to-day execution.This role is remote from Latin America.

What You Will Work On

• Build and ship fullstack product features across candidate and recruiter experiences, from API and data model design to frontend implementation.
• Improve real-time AI-powered experiences used in interviews and assessments, including model orchestration, streaming UX, tool/function-calling patterns, and reliability.
• Contribute to systems that integrate multiple LLM providers and require pragmatic handling of latency, cost, observability, and non-deterministic behavior.
• Develop and improve deterministic internal tooling that helps engineers and agents execute work safely, repeatably, and with strong audibility.
• Partner across product, design, and platform teams to take ambiguous problems from definition to production rollout.
• Lead and mentor through code review, using reviews as both a quality gate and a coaching channel for less-experienced engineers.
• Plan and deliver technical debt, architecture, and observability initiatives that improve long-term system maintainability.
• Participate in on-call operations and drive runbook, reliability, and incident follow-up improvements.

Requirements

• Senior-level experience shipping production software end-to-end in a fullstack capacity.
• Strong backend engineering skills in at least one modern language and ecosystem, plus practical frontend experience with a component-based framework.
• Proven ability to pick up unfamiliar stacks quickly and deliver in mixed-technology environments.
• Hands-on experience with agentic development workflows (for example: Cursor, Claude Code, Codex, or equivalent), including good judgment on delegation, context scoping, and review of AI-generated code.
• Experience building production systems that use AI, such as LLM API integrations, prompt and context design, streaming responses, tool/function calling, and token or cost-aware engineering.
• Significant contribution to code review, with evidence of raising code quality and mentoring peers through the review process.
• Experience identifying and reducing technical debt, and contributing to architecture planning and documentation.
• Proven ownership of production system health through monitoring/alerting improvements, incident response, and operational follow-through.
• Experience partnering with product and technical leads on backlog preparation, scoping, sizing, and delivery planning.
• Strong engineering fundamentals in testing, observability, debugging, and safe incremental delivery.
• Clear written communication and collaborative